Panel truck for changing a railway section and a point work

ABSTRACT

The invention is a machine for repair and construction of railway tracks. The laying machine comprises a frame, railway trucks, upper and lifting mechanisms which are designed for lifting and laying of switch and railway section, two rods hinge connected at the lower part of the frame and two power cylinders. There is also a bracket-swing crane and a retractable support with a pusher, which is designed for removal of the third rail from the railway section surface. The invention allows reducing the cost of repair works.

TECHNICAL FIELD

[0001] The present invention relates to a machine for repair and construction of railway tracks, and in particular to machine for work in tunnels and particularly in subway.

BACKGROUND ART

[0002] The problem is that the switches are subjected to deterioration that is why they should be replaced more often than other railway section. However, replacing works are difficult because of limited area conditions and short terms conditions. (the latter is explained by the adopted train schedule)

[0003] It is a common knowledge that nowadays on railway tracks the mentioned works are executed by the consecutive replacing of worn elements for new ones that with using hand work makes it longer and requires a great number of qualified workers. These works are more difficult when it is necessary to replace all railway section in subway with temporary dismantling of the third rail.

[0004] It is known that there is a laying machine which is composed of frame mounted on railway trucks situated at sides of the frame, upper and lower lifting mechanisms which are designed for lifting and laying of railway section, two rods hinge connected at the lower part of the frame and two power cylinders with hinge connected cases to the central part of the frame and each of cylinder rods is hinge connected to another side of rods (USSR Certificate of Invention No. 1437460, E 01B 29/02, 1988).

[0005] The mentioned laying machine can not be used for replacing of railway sections and switches in subway tunnels where the third rail conductor is situated with strings welding joints and connectors which are not in coincidence with railway joints.

[0006] A temporary dismantling/mounting of the third rail necessary during replacement of the railway section increases the labor volume and in some cases is not possible technically.

[0007] This object (machine) by common characteristics is close to the invention and was taken as prototype.

[0008] In comparison with the prototype the invention is corresponding to all PCT criterions:

[0009] novelty (N), inventive step (IS), industrial application (IA).

DISCLOSURE OF INVENTION

[0010] The works for replacement of a railway section and a switch comprise: prior delivery of new railway sections and laying along railway track, temporary dismantling of the third rail, dismantling of the replacing section or switch, mounting of a new section or switch, transportation of the replaced sections to the storage area and mounting of the third rail. All dismantling and mounting works are executed with assembled railway section or switch.

[0011] A new laying machine for replacing railway section and switch is designed for the following task: to extend the functionality of the laying machine without changing its dimensions that makes possible moving of the laying machine at transportation position with railway section or switch in subway tunnels and also executing of works with railway sections and switches in subway tunnels, on bridges and on limited area railway tracks.

[0012] The invention is also designed for speeding-up of works and reducing a number of workers due to hand work reduction and labor volume reduction during repair works.

[0013] For solution of this task the new laying machine for replacing switch and railway section is submitted. It is composed of the frame, the railway trucks situated at sides of the frame, upper and lower lifting mechanisms which are designed for lifting and laying of railway section, at least two rods hinge connected at the lower part of the frame and at least two power cylinders with hinge connected cases to the central part of the frame and each of cylinder rods is hinge connected to another side of rods.

[0014] The frame's tails can be also mounted on wagon trucks.

[0015] For removal of the third rail from the railway section surface the laying machine is equipped with the first mean which is situated at the upper part of the frame and with the second mean which is situated at lower part of the frame.

[0016] The mentioned first mean has at least one bracket-swing crane for lifting of the third rail and the mentioned second mean has at least one mechanism for move of the third rail in horizontal plane.

[0017] This mechanism is retractable support, which is designed for mounting to the frame on the one side and on another side is hinge connected to the pusher which is designed for move of the third rail.

[0018] The laying machine is equipped with movable in cross direction back balances.

[0019] The laying machine may be equipped with auxiliary lifting mechanism which is mounted under the frame on the monorail and is designed for installation or replacing of dead-woods.

[0020] The positive effect during the use of the invention is providing the replacement of the railway section or the switch in subway tunnel at short terms and with limited number of workers.

BRIEF DESCRIPTION OF DRAWINGS

[0021] The drawings includes:

[0022]FIG. 1.—general view of the laying machine with the first mean in the form of two bracket-swing cranes;

[0023]FIG. 2.—top view of the laying machine with one bracket-swing crane;

[0024]FIG. 3.—schema of the old railway section loading;

[0025]FIG. 4.—schema of the third rail removal;

BEST MODE FOR CARRYING OUT THE INVENTION

[0026] The laying machine (pic. 1,2) for replacing of the old section 1 for the new section 2 of the railway track composes of rectangular cross-section frame 3, two railway trucks 4 and 5 with control cabs situated on sides of the frame 3.

[0027] On each lateral side of the frame 3 two lifting mechanisms 6 with rail grab are mounted on the upper part and two lifting mechanisms 7 with rail grab are mounted on the lower part, four rods 8 hinge connected to the lower part of the frame 3, four power cylinders 9 with hinge connected cases to the central part of the frame 3 and each of cylinder rods is hinge connected to another side of the rods 8.

[0028] The mechanisms 6,7 are mounted with the possibility of turn in cross vertical plane of the frame 3 symmetry.

[0029] The case of each cylinder 9 is hinge connected on the frame 3 between the mechanism 6 and mechanism 7 and its rod is hinge connected to rods 8 between them the safety grates 10 are situated.

[0030] In the upper part of the frame 3 the laying machine is equipped with bracket-swing cranes 11 (pic. 1,4) for lifting of the third rail 12 and in the lower part it is equipped with the retractable support 13 which is designed for connection to the frame 3 on the one side and for hinge connection to the pusher 14 on another side which is designed for move of the third rail 12.

[0031] The laying machine is equipped with the auxiliary lifting mechanism 15 which is mounted under the frame on the monorail 16 and is designed for installation of new dead-woods.

[0032] Under the ends of the frame 3 near the trucks 4 and 5 the back balances 17 are mounted movable in cross direction.

[0033] In the subway tunnel the laying machine functions as follows:

[0034] First, before the beginning of works on the lateral side of the frame 3 a new section 2 is loading by lifting mechanisms 6,7 and is fixing at transportation vertical position and the back balances 17 are moved in direction of the other lateral side.

[0035] The loaded laying machine is transported to the place of work by the locomotive and the frame 3 is situated under the old section 1 which is to be replaced.

[0036] After the voltage break the third rail conductor 12 is lifting by the bracket-swing cranes 11 and is moving by the pushers 14 of the rods 13 to the nearest wall of the tunnel releasing the railway section 1.

[0037] To the opposite wall of the tunnel a new section 2 is moving by power cylinders 9 and is holding at oblique position by the rods 8 relative to the frame 3.

[0038] On the free side of the frame 3 by the pair-wise switching of lifting mechanisms 6,7 the old section 1 is lifting by rail grabs and is installed on the frame 3 at the opposite side to a new section 2.

[0039] The old section 1 as well a new section 2 is moving by power cylinders 9 to the wall of the tunnel and is holding at oblique position by rods 8 releasing the place under the frame 3.

[0040] After lifting of the old section 1 the layout of the ballast section is executed then a new missing dead-woods are laying by the auxiliary lifting mechanism 15.

[0041] The rods 8 are turned by powers cylinders 9 that the old section 1 and a new section 2 are moving at the vertical position.

[0042] A new section 2 is laid on the ballast section and the railway track is aligned.

[0043] The third rail 12 is lowering by bracket-swing cranes 11 and is fixing by pushers 14 at the initial position on ends of crossties of a new section 2.

INDUSTRIAL APPLICABILITY

[0044] The invention can be widely used during the repair works in tunnels under the limited terms conditions without breaking train traffic, especially in subway during the replacement of worn railway section and/or switches.

[0045] The invention makes possible to provide a prompt replacement of the worn railway section by a few number of workers, it makes possible to execute replacement during the every-day technical interval. The necessary equipment is ensemble of means composed of elements used by the Railway Repair Service and its production can be made at the broad machine plant that is, as a rule, an integral part of the Railway Service.

[0046] A specialist can understand that all mentioned means of the invention should be considered in large technical sense with application of the notion “technical equivalents” for each of them. So, the term “frame” (3) implies the supporting girder with cross-section, which corresponds to strength/design requirements. This can be box-shaped construction or tube construction, for example, with oviform of the cross-section. As “railway trucks” (4,5) the motor open wagons can be used which are equipped with driving gear for the self-movement of the laying machine to the place of work. In these wagons workers can go to the place of work. “Power cylinders” (9) also imply any applicable mean, for example, hydro- or pneumocylinders or the pair screw-nut with electric drive. It is not difficult for the specialist using the above mentioned principals to chose necessary means, which correspond to the requirements of the specific conditions. 

What is claims is:
 1. A laying machine for replacing a switch and a railway section mainly in subway comprising a frame, railway trucks situated at sides of the frame, upper and lower lifting mechanisms which are designed for lifting and laying of the railway sections and the switches, at least two rods hinge connected at a lower part of the frame and at least two power cylinders with hinge connected cases to a central part of the frame and each of cylinder rods is hinge connected to another side of the rods characterized in that the laying machine is equipped with first means for moving a third rail situated at an upper part of the frame and second means situated at the lower part of the frame.
 2. The laying machine according to the claim 1 characterized in that the first means has al least one bracket-swing crane for lifting of the third rail and the second means has at least one mechanism for moving the third rail at horizontal plane.
 3. The laying machine according to the claim 2 characterized in that the at least one mechanism is a retractable support which is fixed to the frame on one side and on another is hinge connected with a pusher which is designed for move of the third rail. 